Add support for Antigravity terminal in terminal setup utility

[raky291]

Summary

This PR adds support for the Antigravity terminal in the /terminal-setup command

Details

The changes include:

1. Detection: "Antigravity" is now detected by searching for the string "antigravity" in the environment variables (VSCODE_GIT_ASKPASS_MAIN) or in the parent process name (on non-Windows systems).

2. Configuration: Antigravity is a fork of VS Code and uses a similar configuration structure (Antigravity folder in the user configuration directories).

3. Keybindings: keybindings.json is now automatically configured to send the correct sequence (\r\n) when pressing Shift+Enter and Ctrl+Enter, just like in VS Code, Cursor, and Windsurf.

Related Issues

#15467

How to Validate

1. Open the Antigravity IDE
2. Install the Gemini CLI Companion extension
3. Open Gemini in the Antigravity terminal
4. Run the command /terminal-setup
5. You should see the message "Added Shift+Enter and Ctrl+Enter keybindings to Antigravity."

Pre-Merge Checklist

• Updated relevant documentation and README (if needed)
• Added/updated tests (if needed)
• Noted breaking changes (if any)
• Validated on required platforms/methods:
  • Windows
    • npm run
    • npx
    • Docker

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[gemini-code-assist]

Summary of Changes

Hello @raky291, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request extends the terminal setup utility to include support for the Antigravity IDE. By integrating Antigravity, the utility can now detect this specific VS Code fork and automatically configure its keybindings, ensuring a consistent and functional experience for users interacting with the Gemini CLI Companion extension within the Antigravity terminal.

Highlights

• Antigravity Terminal Support: The terminal setup utility now officially supports the Antigravity IDE, a fork of VS Code, allowing for automated configuration.
• Enhanced Terminal Detection: Antigravity is detected by checking for the string "antigravity" within the VSCODE_GIT_ASKPASS_MAIN environment variable or the parent process name (on non-Windows systems).
• Automated Keybinding Configuration: The utility automatically configures keybindings.json in Antigravity to send "\r\n" for Shift+Enter and Ctrl+Enter, ensuring consistent behavior with other supported IDEs like VS Code, Cursor, and Windsurf.

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[gemini-code-assist]

Code Review

This pull request adds support for the Antigravity terminal, a fork of VS Code, to the terminal setup utility. The changes correctly follow the pattern established for other VS Code forks like Cursor and Windsurf, including detection via environment variables and parent process names, and configuration of keybindings. My review focuses on improving maintainability by refactoring duplicated detection logic. I've suggested consolidating the checks for different terminals into loops to make the code cleaner and easier to extend in the future. None of the provided rules were applicable to these comments, so they remain unchanged.

[jacob314]

[raky291]

Hi @jacob314, I updated the branch but I don't see the option to merge it into main, would you help me?

[jacob314]

Done. Merge should happen as soon as the bots go green.